Eco-efficiency of recycling lime-based materials : technical feasibility and life-cycle assessment
- Author
- Agustin Laveglia (UGent) , Neven Ukrainczyk, Nele De Belie (UGent) and Eddie Koenders
- Organization
- Abstract
- The use of lime-based materials (LBM) dates back to 7000 BC and nowadays around 20 Mt lime/y are consumed in Europe. During its production, it is first required to burn the limestone (CaCO3) to form quicklime (CaO). Hydrated lime (Ca(OH)2) can be produced by adding water to the quicklime. While the material is in the use-phase, the Ca(OH)2 reacts with atmospheric CO2 to form CaCO3 again. This process is called the Lime Cycle (LC) and LBM present the advantage against cement-based materials of having a higher carbonation potential. At the same time, the reaction products (CaO, Ca(OH)2, CaCO3) during the LC suggest a good prospect for their full recyclability. This research studies the recyclability of a pure lime mortar. A recycling cycle was designed and experimentally tested. Two recycling cycles were performed (carbonation, calcination and re-hydration). No additional virgin material (except water) was added to cast the (fully) recycled mortar. The change in reactivity of the CaO was evaluated by selecting four different calcination temperatures. The reaction products during the LC were characterized by means of XRD, DTA/TG and isothermal calorimetry. The environmental benefit of the cradle-to-cradle scenario against the traditional cradle-to-grave was comparatively calculated by Life-Cycle Assessment (LCA) using a substitution approach. The lab results show that it is feasible to recycle a pure lime plaster and mortar at the end of life to produce a second-life lime material. The LCA demonstrates the eco-efficiency of the recycling.
- Keywords
- LCA, Lime mortars, Lime recycling, Sand recycling, Sustainability
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01J35169342SAWT0CZJPYTY3Q4
- MLA
- Laveglia, Agustin, et al. “Eco-Efficiency of Recycling Lime-Based Materials : Technical Feasibility and Life-Cycle Assessment.” 2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Proceedings, 2023.
- APA
- Laveglia, A., Ukrainczyk, N., De Belie, N., & Koenders, E. (2023). Eco-efficiency of recycling lime-based materials : technical feasibility and life-cycle assessment. 2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Proceedings. Presented at the 2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Rabat, Morocco.
- Chicago author-date
- Laveglia, Agustin, Neven Ukrainczyk, Nele De Belie, and Eddie Koenders. 2023. “Eco-Efficiency of Recycling Lime-Based Materials : Technical Feasibility and Life-Cycle Assessment.” In 2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Proceedings.
- Chicago author-date (all authors)
- Laveglia, Agustin, Neven Ukrainczyk, Nele De Belie, and Eddie Koenders. 2023. “Eco-Efficiency of Recycling Lime-Based Materials : Technical Feasibility and Life-Cycle Assessment.” In 2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Proceedings.
- Vancouver
- 1.Laveglia A, Ukrainczyk N, De Belie N, Koenders E. Eco-efficiency of recycling lime-based materials : technical feasibility and life-cycle assessment. In: 2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Proceedings. 2023.
- IEEE
- [1]A. Laveglia, N. Ukrainczyk, N. De Belie, and E. Koenders, “Eco-efficiency of recycling lime-based materials : technical feasibility and life-cycle assessment,” in 2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Proceedings, Rabat, Morocco, 2023.
@inproceedings{01J35169342SAWT0CZJPYTY3Q4,
abstract = {{The use of lime-based materials (LBM) dates back to 7000 BC and nowadays around 20 Mt lime/y are consumed in Europe. During its production, it is first required to burn the limestone (CaCO3) to form quicklime (CaO). Hydrated lime (Ca(OH)2) can be produced by adding water to the quicklime. While the material is in the use-phase, the Ca(OH)2 reacts with atmospheric CO2 to form CaCO3 again. This process is called the Lime Cycle (LC) and LBM present the advantage against cement-based materials of having a higher carbonation potential. At the same time, the reaction products (CaO, Ca(OH)2, CaCO3) during the LC suggest a good prospect for their full recyclability. This research studies the recyclability of a pure lime mortar. A recycling cycle was designed and experimentally tested. Two recycling cycles were performed (carbonation, calcination and re-hydration). No additional virgin material (except water) was added to cast the (fully) recycled mortar. The change in reactivity of the CaO was evaluated by selecting four different calcination temperatures. The reaction products during the LC were characterized by means of XRD, DTA/TG and isothermal calorimetry. The environmental benefit of the cradle-to-cradle scenario against the traditional cradle-to-grave was comparatively calculated by Life-Cycle Assessment (LCA) using a substitution approach. The lab results show that it is feasible to recycle a pure lime plaster and mortar at the end of life to produce a second-life lime material. The LCA demonstrates the eco-efficiency of the recycling.}},
author = {{Laveglia, Agustin and Ukrainczyk, Neven and De Belie, Nele and Koenders, Eddie}},
booktitle = {{2023 RILEM Spring Convention & 4th International Congress on Materials & Structural Stability (CMSS23), Proceedings}},
keywords = {{LCA,Lime mortars,Lime recycling,Sand recycling,Sustainability}},
language = {{eng}},
location = {{Rabat, Morocco}},
pages = {{9}},
title = {{Eco-efficiency of recycling lime-based materials : technical feasibility and life-cycle assessment}},
year = {{2023}},
}